Does force depression resulting from shortening against series elasticity contribute to the activation dependence of optimum length?

The optimum length for force generation () increases as activation is reduced, challenging classic theories of muscle contraction. Although the activation dependence of is seemingly consistent with length-dependent Ca sensitivity, this mechanism can't explain the apparent force dependence of , or the effect of series compliance on activation-related shifts in . We have tested a theory proposing that the activation dependence of relates to force depression resulting from shortening against series elasticity.

Lung function may recover after coal mine fire smoke exposure: a longitudinal cohort study.

Background And Objective: The 2014 Hazelwood coal mine fire exposed residents in nearby Morwell to high concentrations of particulate matter <2.5 µm (PM) for approximately 6 weeks. This analysis aimed to evaluate the long-term impact on respiratory health.

Does the unusual phenomenon of sustained force circumvent the speed-endurance trade off in the jaw muscle of the southern alligator lizard (Elgaria multicarinata)?

The jaw muscles of the southern alligator lizard, Elgaria multicarinata, are used in prolonged mate-holding behavior, and also to catch fast prey. In both males and females, these muscles exhibit an unusual type of high endurance known as sustained force in which contractile force does not return to baseline between subsequent contractions. This phenomenon is assumed to facilitate the prolonged mate-holding observed in this species.

Which personal and social resources help adolescents to recover from negative affect in daily life? An experience sampling study.

Reducing anxiety and depression in adolescents is a global health priority. Personal and social resources (e.g.